23 26 october 2017 hotelbangi-putrajaya ... - christopher teh · paper8 title leaching losses of...
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th + + +
5 SWAT SEEA 2011 + THE 5TH SOIL & WATER ASSESSMENT TOOL
CONFERENCE & WORKSHOP IN SOUTH EAST & ~ST ASIA (SWAT SEEA V)
23 - 26 OCTOBER 2017 HOTELBANGI-PUTRAJAYA BANGI SELANGOR
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5TH SWAT (SOIL & WATER ASSESSMENT TOOLS)
CONFERENCE & WORKSHOP in SOUTH EAST & EAST ASIA
(SWAT SEEA V)
PROGRAMME & BOOK OF ABSTRACTS
Modelling Approaches for Ecosystem Services Management and Planning I SW AT SEEA V 1 2017
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SWATSEEAV 2017
PROGRAMME& BOOK OF ABSTRACTS
"MODELLING APPROACHES FOR ECOSYSTEM
SERVICES MANAGEMENT AND PLANNING"
23 - 26 October 2017 Hotel Bangi- Putrajaya
Selangor, Malaysia
Jointly Organized by:
Modelling Approaches for Ecosystem Services Management and Planning I SW AT SEEA V 2 2017
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Paper8
Title Leaching Losses of Nutrients from Tropical Peat Soil under Different Water Table Depths.
Author Hashim. S. A1, Teh, C.B.S 2, Ahmed. 0. H 3.
1. Department of Agronomy, Taraba State University Jalingo. P. M. 8. 1167, Jalingo
Taraba State.
2. Department of Land Management, Universiti Putra Malaysia, UPM Serdang, Selangor Darul Ehsan.
3. Department of Crop Science, Faculty of Agriculture and Food Sciences, Universiti Putra Malaysia, Bintulu Sarawak Campus, Bintulu, Sarawak, Malaysia.
Organization Universiti Putra Malaysia, Bintulu Sarawak Campus, Bintulu, Sarawak, Malaysia.
Abstract
Studies on nutrients leaching losses of tropical peat soil is limited especially in relation to
the water table depths. Tropical peat soil is formed as the results of organic matter accumulation in a situation where the organic matter production is higher than the rate of its decomposition under anaerobic or extreme acidic condition and low temperature
(Drissen, 2001). Water table depth, pH, seasonal changes, degree of decomposition and
nutrients adsorption capacity affects the amount of nutrients transported in tropical peat soil (Andriesse, 1988). Nutrients concentration differs under different water table depth
and high rainfall subject them to leaching (Zaharah et al., 2004). Water table is one the most important factors affecting crop growth and yield crop grown on peat soils (Lim et
al., 2012) as the it should neither be too high nor too low otherwise crop growth and
development is impeded (Yew et al., 2010). High water table of peat soils also hinders the use of heavy-duty tillage implement (Lim and Wahyudi, 2010).
Nutrients are essential for crop production. All plants require nutrients to grow and a significant portion of these nutrients are removed and exported when the crop is
harvested. Losses of plant nutrients through leaching have been investigated on various
soils. Potassium is the element which is more susceptible to leaching under oil palm
cultivation because of the weak adsorption of potassium ions to soil particles (Corley and
Tinker 2003). Chang and Zakaria (1986) found K leaching losses under young oil palm to be less than 8 kg ha-1 year-1. This objective of this determine the effect of different water
table of tropical peat soils on nutrients leaching losses.
Modelling Approaches for Ecosystem Services Management and Planning I SW AT SEEA V 24 2017